If he likes it for three units I don't think the half point will matter. If you want to tail HD you will want to try to get the same number so you will need to have a book with overnights. He would never advise you to buy a hook. Play it at 4. Sorry HD but have seen you answer this question and pretty sure this is what you would say.
I am just wondering how strong of a bet is 3 units? I saw you had a 2 and a 4 unit yesterday. Is 4 units a big bet for you? Thanks